#pragma once

#include <iostream>
#include <string>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <cstdlib>
#include "Common.hpp"
#include "Log.hpp"
#include "InetAddr.hpp"

namespace SocketModule
{
    using namespace LogModule;
    const static int gbacklog = 16;
    // 模版方法模式
    // 基类socket
    class Socket
    {
    public:
        virtual ~Socket() {};
        virtual void SocketOrDie() = 0;
        virtual void BindOrDie(uint16_t port) = 0;
        virtual void ListenOrDie(int backlog) = 0;
        virtual std::shared_ptr<Socket> Accept(InetAddr *client) = 0;
        virtual void Close() = 0;
        virtual int Recv(std::string *out) = 0;
        virtual int Send(const std::string &message) = 0;
        virtual int Connect(const std::string &server_ip, uint16_t port) = 0;

    public:
         void BuildTcpSocketMethod(uint16_t port, int backlog = gbacklog)
        {
         SocketOrDie();
            BindOrDie(port);
     ListenOrDie(backlog);
        }
 void BuildTcpClientSocketMethod()
 {
     SocketOrDie();
 }
        // UDP，Todo，这里就不写了
    };

    const static int defaultfd = -1;

    class TcpSocket : public Socket
    {
    public:
        TcpSocket() : _sockfd(defaultfd)
        {
        }
        TcpSocket(int fd) : _sockfd(fd)
        {
        }

        ~TcpSocket() {}

        void SocketOrDie() override
        {
            _sockfd = socket(AF_INET, SOCK_STREAM, 0);
            if (_sockfd < 0)
            {
                LOG(LogLevel::FATAL) << "socket error";
                exit(SOCKET_ERR);
            }
            LOG(LogLevel::INFO) << "socket success";
        }

        void BindOrDie(uint16_t port) override
        {
            InetAddr localadrr(port);
            int n = bind(_sockfd, localadrr.NetAddrPtr(), localadrr.NetAddrLen());
            if (n < 0)
            {
                LOG(LogLevel::FATAL) << "bind error";
                exit(BIND_ERR);
            }
            LOG(LogLevel::INFO) << "bind success";
        }

        void ListenOrDie(int backlog) override
        {
            int n = listen(_sockfd, backlog);
            if (n < 0)
            {
                LOG(LogLevel::FATAL) << "listen error";
                exit(LISTEN_ERR);
            }
            LOG(LogLevel::INFO) << "listen success";
        }

        std::shared_ptr<Socket> Accept(InetAddr *client) override
        {
            struct sockaddr_in peer;
            socklen_t len = sizeof(peer);
            int fd = accept(_sockfd, CONV(peer), &len);
            if (fd < 0)
            {
                LOG(LogLevel::WARNING) << "accept warning ...";
                return nullptr; // TODO
            }
            client->SetAddr(peer);
            return std::make_shared<TcpSocket>(fd);
        }

        int Recv(std::string *out) override
        {
            char buffer[1024];//不做处理交给协议处理
            ssize_t n=recv(_sockfd,buffer,sizeof(buffer)-1,0);//同read
            if(n>0)
            {
                buffer[n]=0;
                *out+=buffer;
            }
            return n;
        }

        int Send(const std::string &message) override
        {
            return send(_sockfd,message.c_str(),message.size(),0);//同write
        }

        void Close() override
        {
            if(_sockfd>=0)
            close(_sockfd);
        }

        int Connect(const std::string &server_ip,uint16_t port) override
        {
            InetAddr server(server_ip,port);
            return connect(_sockfd,server.NetAddrPtr(),server.NetAddrLen());
        }

    private:
        int _sockfd;
    };
}